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package StemHR; |
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# |
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# Croatian stemmer |
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# |
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# promjenjive: |
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# - imenice |
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# - pridjevi |
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# - brojevi |
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# - zamjenice |
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# - prilozi |
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# - glagoli |
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# |
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# nepromjenjive: |
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# - prijedlozi |
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# - veznici |
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# - èestice |
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# - uzvici |
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# |
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use strict; |
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use locale; |
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use Memoize; |
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#memoize('stem'); |
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sub kgh { |
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my ($pre,$replace,$post) = @_; |
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$replace =~ s/[cè]/k/g; |
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$replace =~ s/[z¾]/g/g; |
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$replace =~ s/[s¹]/h/g; |
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return $pre . $replace . $post; |
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} |
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# samoglasnici |
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my $sa = '[aeiou]'; |
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# suglasnici |
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my $su = '[^aeiou]'; |
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my $palatal = '(lj|nj|j|æ|¾|¹|¾|¹t|¾d)'; |
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# glagolni razredi |
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my $g_1r = '[td]'; |
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my $g_2r = '[sz]'; |
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my $g_3r = '[pb]'; |
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my $g_4r = '[kgh]'; |
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my $g_5r = '[nm]'; |
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my $g_6r = '(:?nu|n)'; |
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sub stem { |
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my $self = shift; |
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die "call with StemHR->stem('word') $self" unless $self eq 'StemHR'; |
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my $w = shift || return; |
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unless ( |
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# infinitiv |
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$w =~ s/(\w)(ti|æi)$/$1.$2 100/g || |
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# 1. razred |
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$w =~ s/([^sk])[td](em|e¹|e|emo|ete|oh|osmo|oste|o¹e|ijah|ija¹e|ijasno|ijaste|ijahu|imo|ite|en|ena|eni)$/$1s.ti 101/g || |
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# 2. razred |
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$w =~ s/(${sa})[sz](em|e¹|e|e¹emo|emo|ete|u|oh|e|osmo|oste|o¹e|ijah|ija¹e|ijasmo|ijaste|ijahu|imo|ite|uæi|av¹i|ao|la|lo|li|le|la|en|ena|eni)$/$1s.ti 102/ || |
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# 3. razred |
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$w =~ s/(p|b|sp|su)(em|e¹|e|emo|ete|u|oh|osmo|oste|o¹e|ah|a¹e|asmo|aste|ahu|ijah|ija¹e|ijahu|i|imo|ite||uæi|av¹i|ao|la|lo|en|ena|eni)$/$1s.ti 103/ || |
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# 4. razred |
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$w =~ s/[è¾¹](em|e¹|e|emo|ete|u|ah|ahu|en|ena)$/.æi 104/g || |
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$w =~ s/[k](oh|osmo|oste|o¹e|uæi|av¹i|ao|la|lo)$/.æi 105/g || |
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$w =~ s/[c](ijah|ija¹e|ijasmo|ijaste|ijahu|i|imo|ite)$/.æi 106/g || |
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$w =~ s/[g](nuti|oh|nuh|nu|av¹i|nuv¹i|ao|nuo|nem|ne¹|ni|imo|nut|nimo)$/.æi 107/g || |
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# imenice |
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# vrsta a |
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$w =~ s/(${su}st)a$/$1 13/g || |
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$w =~ s/(${su})c[ae]$/$1ce 17/g || |
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# kgh |
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$w =~ s/(\w${sa})([è¾¹czs])(i|e|ima)$/kgh($1,$2,' 1')/gex || |
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$w =~ s/(${sa}[kgh])(a|u|om)$/$1 2/g || |
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$w =~ s/(${su})([è¾¹czs])(i|e|ima)$/kgh($1,"a$2",' 3')/gex || |
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# imenice na palatal |
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$w =~ s/${palatal}${palatal}(a|u|em|i|ima|e)$/$1a$2 9/g || |
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$w =~ s/${palatal}(a|u|em)$/$1 8/g || |
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# nepostojano a |
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$w =~ s/(${su}a{$su})a/$1 4/g || |
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$w =~ s/(${su})(${su})(a|u|i|e|om|ima)$/$1a$2 5/g |
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) { |
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# vrsta a |
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$w =~ s/me$/me 11/g || |
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$w =~ s/(eta|ena)$/e 12/g || |
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$w =~ s/(\w${sa}${su})(o|e|a|u|om|em|i|ima|ina|eta)$/$1 7/g || |
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$w =~ s/(${su})sa$/$1as 14/g || |
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$w =~ s/(${su})ena$/$1e 16/g || |
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$w =~ s/(${su})eta$/$1e 17/g || |
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$w =~ s/(${su})([oe])$/$1$2 18/g || |
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0; |
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} |
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# makni broj pravila |
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$w =~ s/\s\d+$//; |
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# makni toèku koja oznaèava korjen rijeèi |
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$w =~ s/\.//g; |
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return $w; |
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} |
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